Blocking tool



FIG. 1 is a side view of an embodiment of a blocking tool.

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a first end view thereof; and,

FIG. 5 is a second end view thereof.

The broken lines in the drawings illustrate portions of the blocking tool that form no part of the claimed design. 

The ornamental design for a blocking tool, as shown and described. 